boron trifluoride diethyl etherate; ammonium chloride in dichloromethane Ar; -78°C; slow addn. of BF3*Et2O; after 1 h hydrolysed with NH4Cl/H2O at room temp.; yield 75percent erythro/threo 61/34; aq. layer extd. with Et2O; combined organic layers dried over Na2SO4; evapd.; chromd. (Al2O3, CH2Cl2).; identified by 1H-, 13C- and 119Sn- spectroscopy;;
boron trifluoride diethyl etherate; ammonium chloride in dichloromethane Ar; -78°C; slow addn. of BF3*Et2O; after 1 h hydrolysed with NH4Cl/H2O at room temp.; yield 89percent erythro/threo 58/42; aq. layer extd. with Et2O; combined organic layers dried over Na2SO4; evapd.; chromd. (Al2O3, CH2Cl2).; solid product recrystd. from CH2Cl2/ether; identified by 1H-, 13C- and 119Sn- spectroscopy;;
bis-triphenylphosphine-palladium(II) chloride in 1,4-dioxane
1.33333 h; Heating;
参考文献
Banwell, Martin G.; Collis, Maree P.; Crisp, Geoffrey T.; Lambert, John N.; Reum, Monica E.; Scoble, Judith A.
Journal of the Chemical Society, Chemical Communications, 1989 , # 10 p. 616 - 617
